Composition of matter for coating gilded surfaces.



entree sraraera mnr orrica.

JAMES A. HENRY, OF NEIV YORK, N. Y.

Specification of Letters Patent.

Patented Feb. 12, 1907.

Application filed April 28, 1906. Serial No. 314,241.

To (all whom, it may concern:

Be it known that I, James A. HENRY, a citizen 0: the United States, andresident of New York, county of New York, and State of New York, haveinvented certain new and useful Improvements in Composition of Matterfor Coating Gilded Surfaces, of which the following is a specification.

This invention relates to that class of compositions of matter which areused as coat ings for gilded surfaces to impart a dull finish thereto,as picturefraine moldings. The composition may be used over eithermatgold leaf (water-gilding) or oil-gold leaf, the object being toproduce the dull or ground gold finish termed ormolu.

My composition consists of the following ingredients, combined in theproportions stated, viz: white glue, five ounces; gelatin, one andone-half ounces; refined bleached white shellac, four and one-halfounces; gummastic, one-half ounce; gum-benzoin, onehalf ounce; sticklac, forty grains; pulverized white arsenic, fifteen grains.

In the process of amalgamating the composition the glue and the gelatinare placed in a stone vessel containing two quarts of water, which isemployed as an agent for dissolving them. These ingredients are thenmingled by agitation until the glue and gelatin are dis solved. Then thefluid thus produced is heated to nearly a boilingpoint.

Having compounded a fluid in the manner described above, the whiteshellac, gummastic, gum-benzoin, and stick lac are dissolved in onequart of alcohol, (ninety-five per cent,) and the fluid thus formed isadded to the former fluid and thoroughly commingled therewith bystirring. The arsenic is then added to the substance and the whole massis allowed to stand for half an hour. Then it is strained through a finecloth. The strained product is now .llowed to cool off and stand in acold place for twenty-four hours and become coagulated. During thecooling process a thin skin will have formed on the top of the mass.This is peeled o and reiected. The mass is then removed from the vessel,out into small particles, and placed on a slab of marble or stone, whereit is allowed to remain for about three days, or until all the water isdrained off. It is then spread on a wooden surface in a cool room andallowed to remain for about four days, after which it is placed in theopen air and allowed to remain until all moisture is evaporated and itis perfectly dry. The dried particles produced as above described arenow ground into a fine powder, making a product ready for marketing.This powder can be boxed up and kept in an efficient state for anylength of time.

To use the composition as a means for coating gilded surfaces, I mix anounce and a half of the powder with a pint of warm water and apply themixture with a brush over the gilded parts where a dull finish isdesirable.

Having thus described my invention, what I claim as new, and desire tosecure by Let ters Patent, is

1. The herein-described composition of matter for coating gildedsurfaces, consisting of the following ingredients, viz: white glue,gelatin, white shellac, gum-mastic, gum-benzoin, stick lac, and whitearsenic; substantially as escribed.

2. They herein-described composition of matter for coating gildedsurfaces, consisting of the following ingredients, in the followingrelative proporlions, viz: of white glue, five ounces; gelatin, one andonehalf ounces; white shellac, four and one -half ounces; gum-mastic,one-half ounce; gumbenzoin, one-half ounce; stick lac, forty grains; andwhite arsenic, fifteen grains.

In testimony that I claim the foregoing as my inventionI have signed myname, in presence of two witnesses, this 13th day of April, 1906.

JAMES A. HENRY.

Witnesses E. O. SEATON, M. E. Summer.

